School Newsletter Preview Text: The 90 Characters That Determine If It Gets Opened

When a parent looks at their inbox, they see three things before deciding whether to open an email: the sender name, the subject line, and the preview text. Most school newsletters put all their effort into the subject line and leave the preview text as an afterthought — or worse, let it default to the first line of the email body, which is often "View this email in your browser."

Preview text is the line of text that appears after the subject line in most email clients. On desktop Gmail, it shows around 100 characters. On mobile, it shows anywhere from 40 to 90. It is prime real estate that most school communications completely ignore.

What preview text actually is

Preview text — also called preheader text — is a piece of text that email clients pull from your message to display next to the subject line. If you do not set it explicitly, the email client grabs whatever text it finds first in your email body.

That usually means:

• "If you're having trouble viewing this email, click here."
• "View in browser | Unsubscribe"
• The first few words of a navigation menu
• Alt text from a header image like "school-logo.png"

None of those give parents a reason to open the email. Setting preview text explicitly costs about 30 seconds and immediately improves the inbox experience.

How subject line and preview text work together

Think of the subject line and preview text as a two-part message. The subject line leads with the most important thing. The preview text adds a second detail or completes the thought.

Good examples:

• Subject: "Week of May 5: Field Trip Friday" | Preview: "Permission slips due Wednesday — forms attached"
• Subject: "Spring Concert This Thursday" | Preview: "Doors open at 6:30. Parking details and program inside."
• Subject: "Reading Test Next Week" | Preview: "Practice list, schedule, and what to bring — everything you need"
• Subject: "3rd Grade Newsletter" | Preview: "Science fair projects due, spirit week schedule, and a note on homework"

Notice how each preview text adds information rather than repeating what is in the subject line. The goal is for a parent to read both lines together and immediately understand what is in the email and why it matters to them.

What not to do

These preview text patterns reduce open rates and should be avoided:

• Repeating the subject line. "Week of May 5 Newsletter — Week of May 5 Newsletter" wastes both lines. The parent learns nothing new.
• Generic filler. "Read our latest school newsletter for important information" is meaningless. Every newsletter claims to have important information.
• Incomplete sentences that get cut off. Write the most important information in the first 50 characters. Anything after that may not display on mobile.
• Letting the default pull in navigation text. If your newsletter template has nav links at the top ("Home | Calendar | Contact"), those will appear as the preview text unless you set it explicitly.

How to set preview text in your newsletter tool

Most newsletter tools have a dedicated "preview text" or "preheader text" field separate from the email body. Fill it in before every send. If you cannot find it, check the sending settings or email setup screen — it is usually near the subject line field.

If your tool does not support preview text as a separate field, you can add it manually as the first line of your email in white text (same color as the background). This is a workaround, not ideal, but it works. Email clients will show the hidden text as preview while it remains invisible in the body.

Length and what to prioritize

Write preview text between 80 and 110 characters. Shorter than 80 and the email client may pull in random body content to fill the space. Longer than 110 and it will be cut off on most mobile screens.

Put the most specific and actionable information at the front. "Permission slips due Wednesday" is a better opener than "This week we have a few important items, including permission slips due Wednesday." Get to the point in the first 50 characters.

The simplest system that works

Before every send, ask yourself: "If a parent reads only the subject line and the preview text, do they know what action they need to take this week?" If yes, your preview text is doing its job. If no, rewrite it until the answer is yes.

School newsletters that treat preview text seriously typically see open rate improvements of 5 to 15 percentage points compared to newsletters that leave it unset. That is a meaningful difference for the time investment involved.